| River | Site | Total | Pooled | Heterogeneity | |||
| G | d.f. | G | d.f. | G | d.f. | ||
| Bow River | BOW1 | 3.77 | 4 | 1.36 | 1 | 2.41 | 3 |
| BOW2 | 0.31 | 2 | 0.07 | 1 | 0.24 | 1 | |
| BOW3 | 10.49** | 2 | 5.62* | 1 | 4.87* | 1 | |
| BOW4 | 22.17*** | 4 | 3.40 | 1 | 18.78*** | 3 | |
| BOW5 | 13.28** | 2 | 2.34 | 1 | 10.934*** | 1 | |
| BOW6 | 25.61*** | 2 | 0.05 | 1 | 25.56*** | 1 | |
| BOW7 | 6.50 | 4 | 4.09* | 1 | 2.41 | 3 | |
| Oldman River | OLDMAN1 | 21.11** | 6 | 13.77** | 1 | 7.34 | 5 |
| OLDMAN2 | 35.40*** | 6 | 19.74*** | 1 | 15.66** | 5 | |
| OLDMAN3 | 53.32*** | 6 | 28.78*** | 1 | 24.54*** | 5 | |
| OLDMAN4 | 56.54*** | 6 | 0.80 | 1 | 55.74*** | 5 | |
| OLDMAN5 | 37.96*** | 6 | 0.64 | 1 | 37.32*** | 5 | |
| OLDMAN6 | 137.96*** | 6 | 27.58*** | 1 | 110.38*** | 5 | |
| OLDMAN7 | 51.05*** | 6 | 1.79 | 1 | 49.26*** | 5 | |
| OLDMAN8 | 51.56*** | 3 | 0.73 | 1 | 50.82*** | 2 | |